Steam-boiler



R. S. PUTNAM.

(No Model.)

STEAM BOILER.

Patented July 29,- 1884.

WITNESSES:

N. PEYERs, PhnlmLflhograplu-n WnShmgtun. n. c

. NTE TATES A'IFN'I tries.

RANSOM S. PUTNAM, OF PLAINVVELL, MICHIGAN.

STEAM-BOILER.

EBPBCIPICATION forming part of Letters Patent NO. 302,775, dated July 29, 1884:.

(No model.)

To (l/ZZ whom it may concern."

Be it known that I, RANSOM S. PUTNAM, a citizen of the United States, and a resident of Plainwell, in the county of Allegan and State of Michigan, have invented certain new and useful Improvements in SteanrBoilers, and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and usethesame, reference being had to the accompanying drawings, which form apart of this specification, and in which I i Figure 1 is a vertical sectional view of my improved steam boiler or generator. Fig. 2 is a sectional View taken on the line 00 in Fig. 1. Fig. 3 is a horizontal sectional View on the line 1 3 in Fig. 1. Fig. 4is aside View of the portion of the boiler which forms the water-chamber and steanrdome, showing several of the exterior tubes in position; and Fig. 5 is adetail view, on a larger scale, ofone of the said tubes, showing the means for connecting it with the dome.

The same letters refer to the same parts in all the figures.

This invention relates to steam-boilers; and it has for its object to provide a boiler in which the fire-box shall be formed'of a series of water tubes or fines connecting awater-base with the body of the dome or boiler.

It consists in the improved construction and arrangement of parts, which will be hereinafter fully described, and particularly pointed out in the claim.

In the drawings, A A designate legs supporting a suitably-constructed water-base, B.

C is the outershell or casing of my improved boiler, the upper end of which terminates in the smoke-stack D.

E designates the dome or body of the boiler, which is located within the shell or casing C, and which is constructed with a shoulder or flange, F.

G G designate a series of tubes or flues, the lower ends of which are screwed into the upper side of the waterbase at the periphery of the latter, the said tubes being so arranged as to form a complete circle except at the front, where sufficient space is left to afford room for a fire-door. The upper ends of the said tubes are connected with the boiler proper, below the flange of the latter, by means of elbow-j oints H and right and left hand threaded nipples I, the construction of which is clearl y shown in Fig. 5 of the drawings. Several of the said tubes are also connected with thelower end of the boiler by means of T- joints J. (Shown in Fig. l.)

K is a suitably-constructed grate, mounted upon legs L, which elevate it a sufficient distance above the water-base upon which the said grate is placed to afford room forthe ashes and to admit draft. The said grate is circular in shape, and is fitted neatly in the firebox, which is formed by the tubes G, the latter being set sufiicientl y close together for this purpose and yet so far apart that they shall be completely enveloped by flame.

M is a water-easing arranged above the open ing N, which ,is reserved for the fire-door, and having its ends connected with the water-base by means of short tubes 0. The upper side of the said water-case is connected with the boiler by means of tubes or fines P,which correspond with the tubes G, as indicated in Fig. 1 of the drawings.

Suitable means are provided for admitting Water into the boiler and for taking the steam from the latter, and a suitable safety-valve may likewise be provided; but these parts are not herein claimed.

The bottom of the, boiler, designated by letter Q, forms the crown-sheet, and it is c011- nected With the top of the boiler by means of the lines R, which form the fire-fines, and through which the products of combustion pass from the fire-box in an upward direction and out through the smoke-stack D.

The operation of my invention will be readily understood from the foregoing description,

taken in connection with the drawings hereto annexed. Its advantages will also be readily appreciated by those skilled in the art to which it appertains. Mud and sediment contained in the feed-water will settle in the water-base from which it maybe easily removed through a suitable hand-hole. I

Owing to the construction of niy improved boiler, heat is greatly OCOIlOllllZOLl and steam may be generated in a short time and at a rapid rate.

Havingthus described my invention, Iclaim 011 the water-base Within the fire-box, and a and desire to secure by Letters Patent of the United Statesa In a steam boiler or generator, the combina- 5 tion of a water-base, a vertical boiler having an annular flange or shoulder, a circular series of tubes or flues connecting the said water-base with the boiler below the flange of the latter,

several of said tubes being also connected di- 10 rectly with the lower end of the boiler, a grate provided with suitable legs and supported upsuitable casing terminating in a'smoke-stack at its upper end, substantially as set forth.

In testimony thatI claiIn theforegoin-g' as my I 5 own I have hereunto affixed my signature in presence of two witnesses.

RANSODI S. PUTNAM.

Witnesses:

A. CI-IURcI-IILL ROBERTS, BRONSON SorIooNMAKER. 

